关键词: 微观仿真, 行人交通, 虚拟动力学, 疏散

Abstract: As an important component of urban transportation system, pedestrian traffic is attracting more and more attentions from urban transportation researchers and administrants; however, due to the diversity, low-speed, randomicity and self-organization characters of pedestrian flow, it is very difficult to understand and develop a mathematic model to describe the behavior of pedestrian compared with motorized traffic. The authors use computer microscopic simulation to research/evaluate pedestrian traffic, and one of the key preconditions is modeling. That how necessary it is to probe into pedestrian microscopic model was also analyzed, and real data was collected. Then seven pedestrian characteristics, which reflect pedestrian’s psychological characteristics and instinctive consciousness, were presented from some original perspectives. Based on these characteristics, pedestrian virtual dynamics was modeled in the view of dynamics. The model treats a single pedestrian as an entity, which was influenced by virtual self-drive force, repulsive force and pre-avoid force. In the end, two simulation experiences of unidirectional and bidirectional flow were carried to prove the applicability of the proposed model.

Key words: microscopic simulation, pedestrian traffic, virtual dynamics;evacaution